@ModifiedDate
 public Date getAttendeeRequestModDate(AttendeeRequest ar) {
   return ar.getOrganiserEvent().getModifiedDate();
 }
 @UniqueId
 public String getAttendeeRequestUniqueId(AttendeeRequest ar) {
   return ar.getId().toString();
 }
 @Delete
 public void deleteAttendeeRequest(AttendeeRequest ar) {
   log.info("deleteAttendeeRequest");
   ar.setAcknowledged(true); // dont delete, just mark as acknowledged so will be hidden
   SessionManager.session().save(ar);
 }